<!DOCTYPE html>
<html lang="zh-CN">
  <head>
    <meta charset="utf-8">
    <title>test</title>
    <meta http-equiv="X-UA-Compatible" content="IE=edge">



  </head>
  <body>
    <div id="container">
        <input type="text" name="firstname" value="Mickey" style="float:left;width:100px;background:red;">
        <input type="submit" value="Submit" style="float:right;width:100px;background:green;">
    </div>

  </body>
</html>
